Fix 3.11.x version in pyproject

We currently have issues with 3.12 due to pkgutil.ImpImporter being
removed after being long deprecated, see
python/cpython#98040

This is also a way to be in sync with the base images.

Signed-off-by: Rafa Porres Molina <rporresm@redhat.com>

pyproject.toml

@@ -5,14 +5,12 @@ description = "Collection of tools to reconcile services with their desired stat
 authors = [{ name = "Red Hat App-SRE Team", email = "sd-app-sre@redhat.com" }]
 license = { text = "Apache 2.0" }
 readme = "README.md"
-requires-python = ">=3.11"
+requires-python = "==3.11.*"
 classifiers = [
     "Development Status :: 2 - Pre-Alpha",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.11",
-    "Programming Language :: Python :: 3.12",
-    "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
     "anymarkup>=0.7.0,<0.9.0",